103 lines
3.4 KiB
C
103 lines
3.4 KiB
C
|
/*
|
||
|
|
* This file is part of Espruino, a JavaScript interpreter for Microcontrollers
|
||
|
|
*
|
||
|
|
* Copyright (C) 2013 Gordon Williams <gw@pur3.co.uk>
|
||
|
|
*
|
||
|
|
* This Source Code Form is subject to the terms of the Mozilla Public
|
||
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
||
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
||
|
|
*
|
||
|
|
* ----------------------------------------------------------------------------
|
||
|
|
* This file is designed to be parsed during the build process
|
||
|
|
*
|
||
|
|
* JavaScript methods and functions in the global namespace
|
||
|
|
* ----------------------------------------------------------------------------
|
||
|
|
*/
|
||
|
|
#include "jswrap_functions.h"
|
||
|
|
#include "jslex.h"
|
||
|
|
#include "jsparse.h"
|
||
|
|
#include "jsinteractive.h"
|
||
|
|
|
||
|
|
/*JSON{ "type":"variable", "name" : "arguments",
|
||
|
|
"description" : "A variable containing the arguments given to the function",
|
||
|
|
"generate" : "jswrap_arguments",
|
||
|
|
"return" : ["JsVar", "An array containing all the arguments given to the function"]
|
||
|
|
}*/
|
||
|
|
extern JsExecInfo execInfo;
|
||
|
|
JsVar *jswrap_arguments() {
|
||
|
|
JsVar *scope = 0;
|
||
|
|
if (execInfo.scopeCount>0)
|
||
|
|
scope = jsvLock(execInfo.scopes[execInfo.scopeCount-1]);
|
||
|
|
if (!jsvIsFunction(scope)) {
|
||
|
|
jsvUnLock(scope);
|
||
|
|
jsError("Can only use 'arguments' variable inside a function");
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
JsVar *args = jsvNewWithFlags(JSV_ARRAY);
|
||
|
|
if (!args) return 0; // out of memory
|
||
|
|
|
||
|
|
JsObjectIterator it;
|
||
|
|
jsvObjectIteratorNew(&it, scope);
|
||
|
|
while (jsvObjectIteratorHasElement(&it)) {
|
||
|
|
JsVar *idx = jsvObjectIteratorGetKey(&it);
|
||
|
|
if (jsvIsFunctionParameter(idx)) {
|
||
|
|
JsVar *val = jsvSkipOneName(idx);
|
||
|
|
jsvArrayPushAndUnLock(args, val);
|
||
|
|
}
|
||
|
|
jsvUnLock(idx);
|
||
|
|
jsvObjectIteratorNext(&it);
|
||
|
|
}
|
||
|
|
jsvObjectIteratorFree(&it);
|
||
|
|
jsvUnLock(scope);
|
||
|
|
|
||
|
|
return args;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*JSON{ "type":"function", "name" : "eval",
|
||
|
|
"description" : "Evaluate a string containing JavaScript code",
|
||
|
|
"generate" : "jswrap_eval",
|
||
|
|
"params" : [ [ "code", "JsVar", ""] ],
|
||
|
|
"return" : ["JsVar", "The result of evaluating the string"]
|
||
|
|
}*/
|
||
|
|
JsVar *jswrap_eval(JsVar *v) {
|
||
|
|
if (!v) return 0;
|
||
|
|
JsVar *s = jsvAsString(v, false); // get as a string
|
||
|
|
JsVar *result = jspEvaluateVar(jsiGetParser(), s, 0);
|
||
|
|
jsvUnLock(s);
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*JSON{ "type":"function", "name" : "parseInt",
|
||
|
|
"description" : "Convert a string representing a number into an integer",
|
||
|
|
"generate" : "jswrap_parseInt",
|
||
|
|
"params" : [ [ "string", "JsVar", ""],
|
||
|
|
[ "radix", "JsVar", "The Radix of the string (optional)"] ],
|
||
|
|
"return" : ["JsVar", "The integer value of the string (or NaN)"]
|
||
|
|
}*/
|
||
|
|
JsVar *jswrap_parseInt(JsVar *v, JsVar *radixVar) {
|
||
|
|
int radix = 0/*don't force radix*/;
|
||
|
|
if (jsvIsNumeric(radixVar))
|
||
|
|
radix = (int)jsvGetInteger(radixVar);
|
||
|
|
|
||
|
|
char buffer[JS_NUMBER_BUFFER_SIZE];
|
||
|
|
jsvGetString(v, buffer, JS_NUMBER_BUFFER_SIZE);
|
||
|
|
bool hasError;
|
||
|
|
JsVarInt i = stringToIntWithRadix(buffer, radix, &hasError);
|
||
|
|
if (hasError) return jsvNewFromFloat(NAN);
|
||
|
|
return jsvNewFromInteger(i);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*JSON{ "type":"function", "name" : "parseFloat",
|
||
|
|
"description" : "Convert a string representing a number into an float",
|
||
|
|
"generate" : "jswrap_parseFloat",
|
||
|
|
"params" : [ [ "string", "JsVar", ""] ],
|
||
|
|
"return" : ["float", "The value of the string"]
|
||
|
|
}*/
|
||
|
|
JsVarFloat jswrap_parseFloat(JsVar *v) {
|
||
|
|
char buffer[JS_NUMBER_BUFFER_SIZE];
|
||
|
|
jsvGetString(v, buffer, JS_NUMBER_BUFFER_SIZE);
|
||
|
|
return stringToFloat(buffer);
|
||
|
|
}
|